Abstract
An integrable optic-fiber coherent state quantum identification system is presented. In the scheme, the Stokes vectors of polarization coherent state are employed as quantum signal carrier, the dynamic polarization controller serves as a modulation device, and the inherent quantum noise guarantees the security. The driving circuit of laser pulses, detection circuit for weak narrow laser pulses, and signal synchronous module, are self-designed. Classical communication needed by quantum secret communication is implemented by Socket network communication program running on the TCP/IP local area network. The running key employed in the system is 12 bit. The transmission rate of identity picture is 8 kbit/s, the bit error rate between legal users is less than 10-4, and the information I(Alice, Eve) per bit obtained by an attacker is less than 10-14.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 924-929 |
| Number of pages | 6 |
| Journal | Zhongguo Jiguang/Chinese Journal of Lasers |
| Volume | 34 |
| Issue number | 7 |
| State | Published - Jul 2007 |
| Externally published | Yes |
Keywords
- Dynamic polarization controller
- Quantum cryptography
- Quantum identification
- Quantum noise of coherent state
- Quantum optics
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Electrical and Electronic Engineering